The raw material of stainless steel are Japan and Taiwan with excellent quality for regular head machine and multi-station. The wire can be soft or with mechanical property that customer requested for cold-forming process. Due to the characteristic of stainless-steel material is tough. The oxalated coating can help the material go into the tool easily and also extend the lifetime for tool and punch.
Machine screws have tense threads and are steady, but between the threads, there is not too much space between the threads. So they are better used in prepared holes like nuts or machines, this is why these screws are called machine screws. If the screw size has an “M” in the beginning, then we can make sure that it is a machine screw.
Self Tapping Screw
Tapping screws have sharper threads and more spaces between threads. Hence, they can cut threads that suit themselves. These screws are often use in fastening hard metals (such as wood . This is why they are called tapping screws.
SEMS combines two normally seperate parts-typically a screw and a washer- into one permanently .
SEMS combines two normally seperate parts-typically a screw and a washer- into one permanently pre-assembled cost saving component. Washers are hel in place under the screw head by the rolled threads; they will not fall off and are free to rotate.Assembly screws were specially designed for assembly and installation of cabinets or other types of box construction. These unique fasteners act like steel dowels to form strong, stiff butt joints. The screws feature a large shoulder under the head to lock the screw into the wood and prevent pulling through into softer materials.These screws can be removed and reinstalled several times without loss of holding power.
Special Coating Screw
There are many finishes or coating applied to fasteners; some of them can protect fasteners from corrosion, and some others are just for decorative uses.Any types of screws can be coated.
Sen Chang provide high-tensile screws with following series. A2-70~A2-100 A4-70~A4-100To manufacture High-Tensile screws, harder steels and advanced technologies are needed. High-Tensile screws are not easy to produce and are our core products.Screws in this category are just a part of our high-tensile products. You can also find high-tensile products in other categories like Coating Screws.
A washer is a thin plate normally used with screws to help prevent loosening under vibration.A pin is used to secure the position of two parts at the same time. It can be removing from parts easily. The shape of pin could be different with different function.
Special Screws, Nut, Rivet, Nail
This category contains products that are not machine / tapping screws, bolts, washers and pins. If you don't find products you want in the website, please still contact us. We can manufacture products you want with design diagrams.